Fire-box for kilns.



N6. 853,130. PATENTED MAY 7, 1907.

'- J.F.SLATER.

FIRE BOX FOR KILNS.

APPLIOATION FILED SEPT. 6. 1906.

l- I I /I- I: 1 I X I JOHN F. SLATER, OF AVOOA, IOWA.

FIRE-BOX FOR KILNS.

Specification of Letters Patent.

Patented May 7, 1907.

2 Application filed eptember 5, 1906. fierial No. 333.722.

To all whom it may concern:

.Be it known that 1, JOHN F. SLATER, a citizen of the United States residing at Avoca, in the county of Pottawattamie and State of Iowa, have invented a certain new and useful- Fire-Box for Kilns, of which the following is a s ecification.

he object of my invention is to provide a fire box especially designed for use in connec tion with'kilns for burning brick, tile, etc., which fire box is of simple, durable and inexensive construction constructed entirely of bricks and without the use of grates and doors, and so arranged as to provide a maxi mum amount of heat by the use of a given quantity of fuel, and to cause the fuel to burn thoroughly and the smoke and gases arising therefrom to be consumed.

A further object is to provide a fire box of this kind in which the fire may be regulated to suit the requirements of the kiln, and may be easily and quickly adjusted by the operator to either burn brightly and quickly or to burn slowly, and further to provide a fire box of this class in which the fuel will automatically feed into'the part of the fire box in which the combustion takes place so that the furnace may be supplied with fuel at long intervals and need little attention by the operator.

A further object is to provide a coking oven adjacent to the fire box in which fuel may be placed, and when the fire in thefire box is burning, said fuel will be coked, and when it is desired to produce a hot fire, this coked fuel may be easily and quickly discharged to the fire where it will burn brightly and quickly.

My invention consists in certain details in the construction, arrangement and combination of the various parts of the device, whereby the objects contemplated are attained, as hereinafter more fully set forth, pointed out in my claims and illustrated in the accompanying drawings, in which Figure 1 shows a vertical, central, sectional view through the entire fire box embodying my invention, and Fig. 2 shows a front elevation of a portion of a brick kiln with my improved fire box inposition relative thereto.

Referring to the accompanying drawings, I have used the reference numeral 10 to indicate the wall of the kiln. 11 indicates a flue arranged to discharge upwardly into the kiln. The side walls 12 at the bottom of said flue arle1 inclined downwardly and toward each ot er.

The fire box proper comprises a rectangular brick inclosure 13 formed hollow and communicat ng with the flue 11. Near the bottom of the fire box inclosure is an opening 14 for the ash pit 15. At the top of this opening is a brick arch 16. At the inner end of the brick arch 16 is a supplemental arch 17 with its lower arch below the arch 16. The rear of said arch 16 is spaced apart a considerable distance from the adjacent wall of the kiln and the major portion of the combustion takes place in this space between the arch l6 and said wall.

Above the opening 14 is the opening 18, into which the fuel is admitted. On the top of the arch 16 is a flat fire brick platform 19 inclined downwardly and rearwardly to the rear end of the arch 16. At the top of the opening 18 is the arch 20 which extends in-' wardly toward'the kiln further than the arch 16, and at the rear of the arch 20 is a supplemental arch 21, its lower edge being lower than the arch 20. Above the arch 20 is an opening 22 and a coking oven. At the top and bottom of this opening I have arranged guides 23 for the sliding door 24. At the top of the opening 22 is an arch 25. The bottom of the coking oven is flat and the rear end of the coking oven opens into the flue 11.

In practical use and assuming that a fire is burning within the fire box, and that the chamber 15 is filled with ashes and fuel being consumed, and assuming further that the inclined platform 15 has fuel piled upon it, which fuel is piled high enough to engage and cover the front edge of the arch 21, then it is obvious that the entire products of combustion arising from the fire will pass into the flue 11 into the kiln. If it is desired to increase the draft, it is only necessary to remove some of the ashes from beneath the arch 17, and this will have the same effect as would the opening of a door below a grate in an ordinary furnace. If the fire is burning too rapidly, the operator simply forces the fuel resting upon the latform 19 downwardly until air is admitted to the top of the fuel un der the arch 21, and this obviously will have the same effect as would the opening of a door above the grate of an ordinary furnace. After the fuel at the rear of the platform 19 is consumed, the fuel on the platform will slide down the incline and thus automatically feed the fire so that the operator need give comparatively little attention to the fire.

The operator may, if desired, place a quantity of coal in the coking oven and allow it to remain there until the action of the fire has turned it into coke, and then when the requirements of the fire are such as to make it desirable to press the coke upon it, the operator may push the coke through the open ing at the rear of the oven and it will fall upon the fire.

Having thus described my invention, what I claim and desire to secure by Letters Patent of the United States, therefor is v 1. An improved fire box for kilns, com prising inclosing walls forming a combustion chamber, a flue communicating therewith, said chamber having at its front an upper and a lower opening and having between said openings a solid platform inclined downwardly and rearwardly from the bottom of the upper opening.

2.'An improved fire box for kilns, comprising inclosing walls forming a combustion chamber, a flue communicating therewith, said chamber having at its front an upper and a lower opening and having between said openings a solid platform inclined downwardly' and rearwardly from the bottom of theffpper opening, and an .arch extended across 'the combustion chamber above the inclined platform.

3. An improved fire box for kilns, comprising inclosing walls forming a combustion chamber, a flue communicating there-v with, said chamber having at its front an upper and a lower opening and having between said openings a solid platform inclined downwardly and rearwardly from the bottom of the upper opening, and an arch extended transversely across the combustion chamber at the rear of and below the in clined platform.

4. An improved fire box for kilns, comprising inclosing walls forming a combustion chamber, a flue communicating therewith, said chamber having at its front an upper and a lower opening and having between said openings a solid platform inclined do'wnwardly' and rearwardly from the bottom of the upper opening, and a coking oven above the combustion chamber communicating with the flue and a door for closing the front end thereofv 5.' In a fire box for kilns, the combination of inclosing walls forming a combustion chamber having a fuel opening at its front and an ash pit opening at its front below the fuel opening, an arch above the ash pit opening, extending to a point near the center of the combustion chamber, a solid brick platform extending from the bottom of the fuel opening downwardly and rearwardly and supported by said arch, an arch above the fuel opening, extending rearwardly above the combustion chamber further than the said inclined platform, and a supplemental arch projecting below said latter arch with its front edge above the central portion of the inclined platform, and a flue communicating with the combustion chamber.

6. In a fire box for kilns, the combination of inclosing walls forming a combustion chamber having a fuel opening at its front and an ash pit opening at its front below the fuel opening, an arch above the ash pit opening, extending to a point near the center of the combustion chamber, a solid brick platform extending from the bottom of the fuel opening downwardly and rearwardly and supported by said arch, an arch above the fuel opening, extending rearwardly above the combustion chamber further than the said inclined platform, and a supplemental arch projecting below said latter arch with its front edge above the central portion of the inclined platform, a flue communicating with the combustion chamber, and a supplemental arch projecting below the arch above the ash pit opening at the rear end of said latter arch.

7. In a fire box for kilns, the combination of inclosing walls forming a combustion chamber having a fuel opening at its front and an ash pit opening at its front below-the fuel opening, an arch above the ash pit opening, extending to a point near the center of the combustion chamber, a solid brick platform extending from the bottom of the fuel opening downwardly and rearwardly and supported by said arch, an arch above the fuel opening, extending rearwardly above the combustion chamber further than the said inclined platform, a supplemental arch projecting below said latter arch with its front edge above the central portion of the inclined platform, a flue communicating with the combustion chamber, and a coking oven formed with a flat bottom, open at its front and also open at its rear, communicating with said flue, said coking oven arranged above the arch of the fuel opening, and a sliding door for the front of the coking oven.

JOHN F. SLATER. Witnesses:

JOHN FLETCHER, A. W. DRAKE.

ITO 

